Once the first shared storage is created, the main user account becomes enabled. You must define the initial password yourself, and it can be changed at any time right in the Cloud Panel.
Log in to the Cloud Panel.
Select Infrastructure > Shared Storage > Access.
To change password click the pencil icon.
In the Login Data section, enter the password in the appropriate fields and click Confirm Changes. Remember this password for later.
The password has now been changed.